Cell Cycle and Cell DivisionHard
Question
The exchange of genetic material between chromatids of paired homologous chromosomes during first meiotic division is called
Options
A.transformation
B.chiasmata
C.crossing over
D.synapsis
Solution
In pachytene stage of prophase -I of meiosis, there is breakage and reunion of chromatids, it results in exchange of segments between non-sister chromatids of a bivalent, known as crossing over. It leads to recombination of linked genes / alleles and is a major source of continuous type of genetic variations in sexually reproducing organisms.
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